[Fedora-xen] [BUG] dmidecode in DomU throws thousands of xen printk's

[Rik van Riel]

Daniel P. Berrange wrote:
> On Mon, Aug 07, 2006 at 11:40:34PM -0700, Matt C wrote:
>> System is kernel-xen-2.6.17-1.2157_FC5 on a 2p opteron (older 
>> non-hardware-virt). This happens when I try to run the 'dmidecode' tool 
>> from within a non-privileged guest. The guest is running the same kernel 
>> as above. One other note is that the console on this system is serial, 
>> ttyS0 at 9600bps... which may have something to do with the CPU lockup 
>> bugs below.

The guest should not be trying to do those operations.  I can
take a look into tightening our /dev/mem patch, since it does
not seem to happen with some of our Xen kernels but it does
with others.

> Indeed, thre is no SMBios data made available to ParaVirt guests so it is
> not currently possible to make dmidecide work for PV guests. This may change
> in the future, but I don't think anyone is actively working on SMBios support
> for PV just yet.

Yeah, I'm pretty sure we don't want SMBios data for paravirt
guests.  After all, they're not running on real hardware...

-- 
"Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it." - Brian W. Kernighan